P2X3 AND/OR P2X2/3 COMPOUNDS AND METHODS

1 . A compound of the structure of formula (I):

wherein:

R 1 is optionally substituted heteroaryl or NR 5 R 6 ;

R 2 is optionally substituted aryl, optionally substituted heteroaryl, C 1 to C 6 alkyl, or S—C 1 to C 6 alkyl;

R 3 is H or C 1 to C 6 alkyl;

R 4 is optionally substituted heteroaryl;

R 5 and R 6 are, independently, selected from the group consisting of H, optionally substituted C 1 to C 6 alkyl, C 3 to C 6 cycloalkyl, optionally substituted aryl, optionally substituted heteroaryl, and CO(C 1 to C 6 alkyl); or

R 5 and R 6 are joined to form a 5 or 6-membered heterocyclic ring optionally substituted by one or more of halogen, C 1 to C 6 alkyl, C 1 to C 6 alkoxy, C 1 to C 6 hydroxyalkyl, C 3 to C 6 cycloalkyl, C 1 to C 6 alkyl containing 1 to 3 fluorine atoms, C 3 to C 6 cycloalkyl-C 1 to C 6 alkyl, or CONH 2 ;

or a pharmaceutically acceptable salt or prodrug thereof.

2 . A compound according to claim 1 which is of the structure of formula (II):

3 . A compound according to claim 1 which is of the structure of formula (III):

4 . A compound according to claim 1 which is of the structure of formula (IV):

5 . A compound according to claim 1 , wherein R 1 is:

optionally substituted heteroaryl;

heteroaryl substituted with one or more halogen, C 1 to C 6 alkyl, C 3 to C 6 cycloalkyl, C 3 to C 6 cycloalkyl-C 1 to C 6 alkyl, C 1 to C 6 hydroxyalkyl, C 1 to C 6 alkoxy, C 1 or C 6 alkyl containing 1 to 3 fluorine atoms, or CH 2 CONH 2 ;

oxadiazole, pyrazole, thiophene, or isoxazole;

oxadiazole substituted with one or more C 1 to C 6 alkyl, pyrazole substituted with one or more C 1 to C 6 alkyl, pyrazole substituted with one or more C 3 to C 6 cycloalkyl-C 1 to C 6 alkyl, pyrazole substituted with one or more C 1 to C 6 alkyl containing 1 to 3 fluorine atoms, pyrazole substituted with one or more CH 2 CONH 2 groups, thiophene substituted with one or more C 1 to C 6 alkyl, or isoxazole substituted with one or more C 1 to C 6 alkyl;

oxadiazole substituted with one C 1 to C 6 alkyl, pyrazole substituted with one C 1 to C 6 alkyl, pyrazole substituted with one C 3 to C 6 cycloalkyl-C 1 to C 6 alkyl, pyrazole substituted with one C 1 to C 6 alkyl containing 1 fluorine atom, pyrazole substituted with one CH 2 CONH 2 group, thiophene substituted with one C 1 to C 6 alkyl, or isoxazole substituted with one or two C 1 to C 6 alkyl;

oxadiazole substituted with one ethyl, pyrazole substituted with one CH 3 or CH 2 CH 3 , pyrazole substituted with one —CH 2 -cyclopropyl, pyrazole substituted with one CH 2 CH 2 F, pyrazole substituted with one CH 2 CONH 2 group, thiophene substituted with one CH 3 , or isoxazole substituted with two CH 3 ; or

2-ethyl-1,3,4-oxadiazole, 1-methyl-pyrazole, 1-ethyl-pyrazole, 1-cyclopropylmethane-pyrazole, 1-fluoroethane-pyrazole, 1-carboxamidomethyl-pyrazole, 2-methyl-thiophene, or 3,5-dimethyl-isoxazole.

6 . A compound according to claim 1 , wherein R 2 is:

optionally substituted aryl;

optionally substituted phenyl;

phenyl substituted with one or more C 1 to C 6 alkyl;

phenyl substituted with one CH 3 ;

2-tolyl or 3-tolyl;

C 1 to C 6 alkyl;

butyl;

—S—(C 1 to C 6 alkyl);

—SCH 2 CH 2 CH 3 ;

optionally substituted heteroaryl;

heteroaryl substituted with one or more halogen, cyano, C 1 to C 6 alkyl, or C 1 to C 6 alkyl containing 1-3 fluorine atoms;

thiazole, thiophene, or furan;

thiazole substituted with C 1 to C 6 alkyl;

thiophene substituted with one or more of halogen, cyano, C 1 to C 6 alkyl, or C 1 to C 6 alkyl containing 1-3 fluorine atoms;

furan substituted with C 1 to C 6 alkyl; or

2-chloro-thiophene, 2-methyl-thiophene, 2-cyano-thiophene, 2-trifluoromethyl-thiophene, 5-methyl-thiazole, 2-methyl-thiazole, or 2-methyl-furan.

7 . A compound according to claim 1 , wherein R 4 is:

optionally substituted triazole, optionally substituted pyridine, optionally substituted pyridone, optionally substituted oxadiazole, optionally substituted pyrazine, or optionally substituted pyrimidine;

heteroaryl optionally substituted with C 1 to C 6 alkyl, C 3 to C 6 cycloalkyl, C 1 to C 6 alkoxy, or C 1 to C 6 trifluoroalkyl;

pyridine substituted with one or more C 1 to C 6 alkyl, C 3 to C 6 cycloalkyl, C 1 to C 6 alkoxy, or C 1 to C 6 trifluoroalkyl;

pyridine and the nitrogen atom of said pyridine is bound to an O-atom;

pyrazine substituted with one or more C 1 to C 6 alkyl;

pyrimidine substituted with one or more C 1 to C 6 alkyl or C 1 to C 6 alkoxy;

pyridone substituted with one or more C 1 to C 6 alkyl; or

1,2,4-triazole, 2-methyl-pyridine, 2-methoxy-pyridine, 1-oxo-pyridine, 1-oxo-2-methyl-pyridine, 1-oxo-2-trifluoromethyl-pyridine, 2-trifluoromethyl-pyridine, 2-cyclopropyl-pyridine, 1,3,4-oxadiazole, 1,2,4-oxadiazole, 3-methyl-1,2,4-oxadiazole, 2-methyl-1,3,4-oxadiazole, 2-methyl-pyrazine, 2-methyl-pyrimidine, 2-methoxy-pyrimidine, or 1-methyl-pyridone.

8 . A compound according to claim 1 , wherein one or both of R 5 and R 6 are:

optionally substituted phenyl;

phenyl substituted with fluorine or C 1 to C 6 alkoxy;

optionally substituted thiazole;

optionally substituted C 1 to C 6 alkyl or C 3 to C 6 cycloalkyl;

4-fluoro-phenyl or 2-methoxy-phenyl.

9 . A compound according to claim 1 , wherein R 5 and R 6 are joined to form:

an optionally substituted heteroaryl or an optionally substituted 5 or 6-membered heterocyclic ring;

an optionally substituted pyrrolidine, piperazine or piperidine;

an optionally substituted imidazole, pyrazole, tetrazole, or triazole;

pyrrolidine optionally substituted with one or more C 1 to C 6 alkyl or C 1 to C 6 alkoxy;

imidazole substituted with one or more C 1 to C 6 alkyl;

a pyrazole substituted with one or more C 1 to C 6 alkyl;

tetrazole substituted with one or more C 3 to C 6 cycloalkyl, C 1 to C 6 alkyl, C 1 to C 6 hydroxyalkyl, C 1 to C 6 alkyl containing 1-3 fluorine atoms, and C 3 to C 6 cycloalkyl-C 1 to C 6 alkyl;

triazole substituted with one or more C 3 to C 6 cycloalkyl, C 1 to C 6 alkyl containing 1-3 fluorine atoms, and C 1 to C 6 alkyl;

a piperidine substituted with one or more C 1 to C 6 alkoxy, halogen, C 1 to C 6 alkyl containing 1-3 fluorine atoms, C 1 to C 6 alkyl, or CONH 2 ; or

a piperazine substituted with one CONH 2 .

10 . A compound according to claim 1 , wherein R 5 and R 6 are joined to form 3-methoxy-pyrrolidine, 3-methyl-3-methoxy-pyrrolidine, 2,5-dimethjyl-imidazole, 5-ethyl-pyrazole, 5-propyl-tetrazole, 5-cyclopropyl-tetrazole, 5-propyl-tetrazole, 5-isopropyl-tetrazole, 5-ethyl-tetrazole, 5-cyclobutyl-tetrazole, 5-cyclopropylmethyl-tetrazole, 5-methyl-tetrazole, 5-hydroxymethyl-tetrazole, 5-difluoromethyl-tetrazole, 5-(2,2,2-trifluoroethyl)-tetrazole, 5-(1,1-difluoroethyl)-tetrazole, 5-cyclopropyl-triazole, 5-difluoromethyl-triazole, 5-trifluoromethyl-triazole, 5-methyl-triazole, 5-isopropyl-triazole, 5-propyl-triazole, 5-ethyl-triazole, 5-tert-butyl-triazole, 5-cyclobutyl-triazole, 5-(1,1-difluoroethyl)-triazole, 5-(2,2,2-trifluoroethyl)-triazole, 3,5-dimethyl-1,2,4-triazole, 4-methyl-piperidine, 4,4-dimethyl-piperidine, 4,4-difluoro-piperidine, 4-methyl-4-carboxamido-piperidine, 4-fluoro-piperidine, 4-trifluoromethyl-piperidine, 4-fluoromethyl-piperidine, 4-methyl-4-methoxy-piperidine, 4-methoxy-piperidine, or 3-methoxy-piperidine, or 4-carboxamido-piperazine.

11 . A compound according to claim 1 , which is selected from the group consisting of

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(5-ethyl-1,3,4-oxadiazol-2-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(2,5-dimethyl-1H-imidazol-1-yl)-N-((6-methylpyridin-3-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(3,5-dimethyl-4H-1,2,4-triazol-4-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(5-(difluoromethyl)-1H-1,2,3-triazol-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-(difluoromethyl)-1H-1,2,3-triazol-1-yl)-3-(5-methyl-1,3,4-thiadiazol-2-yl)-N-((6-methylpyridin-3-yl)methyl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-ethyl-1H-pyrazol-1-yl)-N-((6-methylpyridin-3-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-3-(5-methylthiophen-2-yl)-8-(phenylamino)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(1-methyl-1H-pyrazol-4-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-3-butyl-8-(4-methylpiperidin-1-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(4-methylpiperidin-1-yl)-3-(propylthio)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(4-methylpiperidin-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(4-carbamoyl-4-methylpiperidin-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(4-carbamoylpiperazin-1-yl)-N-((6-methylpyridin-3-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide

(S)—N-(1-(1,3,4-oxadiazol-2-yl)ethyl)-8-(5-(difluoromethyl)-1H-1,2,3-triazol-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(4-methylpiperidin-1-yl)-3-(o-tolyl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-cyclopropyl-1H-tetrazol-1-yl)-N-((6-methylpyridin-3-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-(hydroxymethyl)-1H-tetrazol-1-yl)-N-((6-methylpyridin-3-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-(difluoromethyl)-1H-tetrazol-1-yl)-N-((6-methylpyridin-3-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(R)-8-(5-(difluoromethyl)-1H-tetrazol-1-yl)-N-(1-(3-methyl-1,2,4-oxadiazol-5-yl)ethyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(N-methylisobutyramido)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-ethyl-1,3,4-oxadiazol-2-yl)-N-((6-methylpyridin-3-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-ethyl-1H-1,2,3-triazol-1-yl)-N-((6-methylpyridin-3-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(5-ethyl-1H-1,2,3-triazol-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-ethyl-1H-1,2,3-triazol-1-yl)-N-((5-methylpyrazin-2-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-cyclopropyl-1H-1,2,3-triazol-1-yl)-N-((6-methylpyridin-3-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-3-(5-methylthiophen-2-yl)-8-(5-(trifluoromethyl)-1H-1,2,3-triazol-1-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-(difluoromethyl)-1H-1,2,3-triazol-1-yl)-N-((6-methylpyridin-3-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-methyl-1H-1,2,3-triazol-1-yl)-N-((6-methylpyridin-3-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(5-methyl-1H-1,2,3-triazol-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

N-((6-methylpyridin-3-yl)methyl)-3-(5-methylthiophen-2-yl)-8-(5-(trifluoromethyl)-1H-1,2,3-triazol-1-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-(difluoromethyl)-1H-1,2,3-triazol-1-yl)-N-((2-methylpyrimidin-5-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-(difluoromethyl)-1H-1,2,3-triazol-1-yl)-N-((5-methylpyrazin-2-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-ethyl-1H-1,2,3-triazol-1-yl)-N-((2-methylpyrimidin-5-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(5-cyclopropyl-1H-1,2,3-triazol-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-(difluoromethyl)-1H-1,2,3-triazol-1-yl)-N-((2-methoxypyrimidin-5-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-(difluoromethyl)-1H-1,2,3-triazol-1-yl)-N-((6-methylpyridin-3-yl)methyl)-3-(5-methylthiazol-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(5-isopropyl-1H-1,2,3-triazol-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-3-(5-chlorothiophen-2-yl)-8-(5-(difluoromethyl)-1H-1,2,3-triazol-1-yl)imidazo[1,2-a]pyridine-6-carboxamide,

N-((2-methylpyrimidin-5-yl)methyl)-3-(5-methylthiophen-2-yl)-8-(5-(trifluoromethyl)-1H-1,2,3-triazol-1-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-isopropyl-1H-1,2,3-triazol-1-yl)-N-((2-methylpyrimidin-5-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-cyclopropyl-1H-1,2,3-triazol-1-yl)-N-((2-methylpyrimidin-5-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-cyclopropyl-1H-1,2,3-triazol-1-yl)-N-((2-methoxypyrimidin-5-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(5-cyclobutyl-1H-1,2,3-triazol-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

N-((2-methoxy pyrimidin-5-yl)methyl)-3-(5-methylthiophen-2-yl)-8-(5-(trifluoromethyl)-1H-1,2,3-triazol-1-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-isopropyl-1H-1,2,3-triazol-1-yl)-N-((6-methylpyridin-3-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(5-(tert-butyl)-1H-1,2,3-triazol-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-(difluoromethyl)-1H-1,2,3-triazol-1-yl)-N-((2-methylpyrimidin-5-yl)methyl)-3-(5-methylthiazol-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-(difluoromethyl)-1H-1,2,3-triazol-1-yl)-3-(5-methylfuran-2-yl)-N-((6-methylpyridin-3-yl)methyl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-cyclobutyl-1H-1,2,3-triazol-1-yl)-N-((2-methylpyrimidin-5-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(1,3,4-oxadiazol-2-yl)ethyl)-8-(5-(difluoromethyl)-1H-1,2,3-triazol-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-3-(5-cyanothiophen-2-yl)-8-(5-(difluoromethyl)-1H-1,2,3-triazol-1-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)propyl)-8-(5-(difluoromethyl)-1H-1,2,3-triazol-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(5-(difluoromethyl)-1H-1,2,3-triazol-1-yl)-3-(5-methylthiazol-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)-8-(5-(difluoromethyl)-1H-1,2,3-triazol-1-yl)-N-(2-methyl-1-(4H-1,2,4-triazol-3-yl)propyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-cyclobutyl-1H-1,2,3-triazol-1-yl)-N-((2-methylpyrimidin-5-yl)methyl)-3-(5-methylthiazol-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

N-((6-methylpyridin-3-yl)methyl)-3-(5-methylthiazol-2-yl)-8-(5-(trifluoromethyl)-1H-1,2,3-triazol-1-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(5-(tert-butyl)-1H-1,2,3-triazol-1-yl)-3-(5-methylthiazol-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)propyl)-8-(5-ethyl-1H-1,2,3-triazol-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(5-(difluoromethyl)-1H-1,2,3-triazol-1-yl)-3-(5-(trifluoromethypthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(5-(difluoromethyl)-1H-1,2,3-triazol-1-yl)-3-(5-methylfuran-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)propyl)-8-(5-isopropyl-1H-1,2,3-triazol-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(5-ethyl-1H-1,2,3-triazol-1-yl)-3-(5-methylfuran-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-3-(5-methylthiophen-2-yl)-8-(5-propyl-1H-1,2,3-triazol-1-yl)imidazo[1,2-a]pyridine-6-carboxamide,

N-((2-methylpyrimidin-5-yl)methyl)-3-(5-methylthiazol-2-yl)-8-(5-propyl-1H-1,2,3-triazol-1-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-(difluoromethyl)-1H-1,2,3-triazol-1-yl)-3-(5-methylfuran-2-yl)-N-((2-methylpyrimidin-5-yl)methyl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-(difluoromethyl)-1H-1,2,3-triazol-1-yl)-N-((2-methylpyrimidin-5-yl)methyl)-3-(2-methylthiazol-5-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)propyl)-8-(5-(tert-butyl)-1H-1,2,3-triazol-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

N-((2-methylpyrimidin-5-yl)methyl)-3-(5-methylthiazol-2-yl)-8-(5-(trifluoromethyl)-1H-1,2,3-triazol-1-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)propyl)-3-(5-chlorothiophen-2-yl)-8-(5-isopropyl-1H-1,2,3-triazol-1-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(5-(1,1-difluoroethyl)-1H-1,2,3-triazol-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-(1,1-difluoroethyl)-1H-1,2,3-triazol-1-yl)-N-((2-methylpyrimidin-5-yl)methyl)-3-(5-methylthiazol-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-(1,1-difluoroethyl)-1H-1,2,3-triazol-1-yl)-N-((2-methylpyrimidin-5-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)-8-(5-ethyl-1H-1,2,3-triazol-1-yl)-N-(2-methyl-1-(4H-1,2,4-triazol-3-yl)propyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(2-methyl-1-(4H-1,2,4-triazol-3-yl)propyl)-8-(5-methyl-1H-1,2,3-triazol-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-ethyl-1H-1,2,3-triazol-1-yl)-N-((2-methylpyrimidin-5-yl)methyl)-3-(5-methylthiazol-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-3-(5-chlorothiophen-2-yl)-8-(5-(1,1-difluoroethyl)-1H-1,2,3-triazol-1-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-(difluoromethyl)-1H-1,2,3-triazol-1-yl)-N-((5-methylpyrazin-2-yl)methyl)-3-(5-methylthiazol-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-(difluoromethyl)-1H-1,2,3-triazol-1-yl)-3-(5-methylfuran-2-yl)-N-((5-methylpyrazin-2-yl)methyl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-3-(5-chlorothiophen-2-yl)-8-(5-(trifluoromethyl)-1H-1,2,3-triazol-1-yl)imidazo[1,2-a]pyridine-6-carboxamide,

N-((2-methylpyrimidin-5-yl)methyl)-3-(5-methylthiophen-2-yl)-8-(5-(2,2,2-trifluoroethyl)-1H-1,2,3-triazol-1-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-3-(5-methylthiophen-2-yl)-8-(5-(2,2,2-trifluoroethyl)-1H-1,2,3-triazol-1-yl)imidazo[1,2-a]pyridine-6-carboxamide,

N-((2-methylpyrimidin-5-yl)methyl)-3-(5-methylthiazol-2-yl)-8-(5-(2,2,2-trifluoroethyl)-1H-1,2,3-triazol-1-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-(difluoromethyl)-1H-1,2,3-triazol-1-yl)-N-((6-methoxypyridin-3-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(R)-8-(5-(difluoromethyl)-1H-1,2,3-triazol-1-yl)-N-(1-(2-methylpyrimidin-5-yl)ethyl)-3-(5-methylthiazol-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(R)-8-(5-(difluoromethyl)-1H-1,2,3-triazol-1-yl)-N-(1-(3-methyl-1,2,4-oxadiazol-5-yl)ethyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

N-((2-methoxypyrimidin-5-yl)methyl)-3-(5-methylthiazol-2-yl)-8-(5-(trifluoromethyl)-1H-1,2,3-triazol-1-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-(1,1-difluoroethyl)-1H-1,2,3-triazol-1-yl)-N-((6-methylpyridin-3-yl)methyl)-3-(5-methylthiazol-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(R)-8-(5-ethyl-1H-1,2,3-triazol-1-yl)-N-(1-(3-methyl-1,2,4-oxadiazol-5-yl)ethyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

2-methyl-5-((3-(5-methylthiophen-2-yl)-8-(phenylamino)imidazo[1,2-a]pyridine-6-carboxamido)methyl)pyridine 1-oxide,

N-((1-methyl-2-oxo-1,2-dihydropyridin-4-yl)methyl)-3-(5-methylthiophen-2-yl)-8-(phenylamino)imidazo[1,2-a]pyridine-6-carboxamide,

N-((6-methylpyridin-3-yl)methyl)-3-(5-methylthiophen-2-yl)-8-(phenylamino)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-3-(5-methylthiophen-2-yl)-8-(thiazol-2-ylamino)imidazo[1,2-a]pyridine-6-carboxamide,

N-((1-methyl-2-oxo-1,2-dihydropyridin-4-yl)methyl)-3-(5-methylthiophen-2-yl)-8-(thiazol-2-ylamino)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-((5-methylthiazol-2-yl)amino)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-((4-fluorophenyl)amino)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-((2-methoxyphenyl)amino)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

2-methyl-5-((8-(1-methyl-1H-pyrazol-4-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamido)methyl)pyridine 1-oxide,

8-(1-methyl-1H-pyrazol-4-yl)-N-((6-methylpyridin-3-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(1-methyl-1H-pyrazol-4-yl)-N-((1-methyl-2-oxo-1,2-dihydropyridin-4-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(1-methyl-1H-pyrazol-5-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-3,8-bis(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

N—((S)-1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(3,5-dimethylisoxazol-4-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(1-ethyl-1H-pyrazol-5-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(1-(cyclopropylmethyl)-1H-pyrazol-4-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(1-(2-fluoroethyl)-1H-pyrazol-4-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(3,5-dimethylisoxazol-4-yl)-N-((6-methylpyridin-3-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

N-((S)-1-(4H-1,2,4-triazol-3-yl)ethyl)-3-(5-chlorothiophen-2-yl)-8-(3,5-dimethylisoxazol-4-yl)imidazo[1,2-a]pyridine-6-carboxamide,

N—((S)-1-(4H-1,2,4-triazol-3-yl)propyl)-8-(3,5-dimethylisoxazol-4-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

N—((S)-1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(3,5-dimethylisoxazol-4-yl)-3-(5-methylthiazol-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

N—((S)-1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(3,5-dimethyl-1H-pyrazol-4-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(3,5-dimethyl-1H-pyrazol-4-yl)-N-((2-methylpyrimidin-5-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(1-(2-amino-2-oxoethyl)-1H-pyrazol-4-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(1-ethyl-1H-pyrazol-5-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

2-methyl-5-((8-(4-methylpiperidin-1-yl)-3-(propylthio)imidazo[1,2-a]pyridine-6-carboxamido)methyl)pyridine 1-oxide,

8-(4-methylpiperidin-1-yl)-N-((6-methylpyridin-3-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(4-methylpiperidin-1-yl)-N-((5-methylpyrazin-2-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

2-methyl-5-((8-(4-methylpiperidin-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamido)methyl)pyridine 1-oxide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-3-(5-chlorothiophen-2-yl)-8-(4-methylpiperidin-1-yl)imidazo[1,2-a]pyridine-6-carboxamide,

5-((3-(5-chlorothiophen-2-yl)-8-(4-methylpiperidin-1-yl)imidazo[1,2-a]pyridine-6-carboxamido)methyl)-2-methylpyridine 1-oxide,

5-((8-(cyclohexylamino)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine carboxamido)methyl)-2-methylpyridine 1-oxide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(cyclohexylamino)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

5-((8-(4,4-dimethylpiperidin-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamido)methyl)-2-methylpyridine 1-oxide,

5-((8-(4,4-difluoropiperidin-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamido)methyl)-2-methylpyridine 1-oxide,

5-((8-(cyclohexylamino)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamido)methyl)-2-(trifluoromethyl)pyridine 1-oxide,

2-methyl-5-((8-(4-methylpiperidin-1-yl)-3-(5-methylthiazol-2-yl)imidazo[1,2-a]pyridine-6-carboxamido)methyl)pyridine 1-oxide,

5-((8-(cyclohexyl(methyl)amino)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamido)methyl)-2-methylpyridine 1-oxide,

5-((8-(4-fluoropiperidin-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamido)methyl)-2-methylpyridine 1-oxide,

N-((1-methyl-2-oxo-1,2-dihydropyridin-4-yl)methyl)-8-(4-methylpiperidin-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(4,4-dimethylpiperidin-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(4,4-difluoropiperidin-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

2-methyl-5-((3-(5-methylthiophen-2-yl)-8-(4-(trifluoromethyl)piperidin-1-yl)imidazo[1,2-a]pyridine-6-carboxamido)methyl)pyridine 1-oxide,

5-((8-(4-(fluoromethyl)piperidin-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamido)methyl)-2-methylpyridine 1-oxide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(4-(fluoromethyl)piperidin-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-3-(5-methylthiophen-2-yl)-8-(4-(trifluoromethyl)piperidin-1-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(cyclopentylamino)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(4,4-difluoropiperidin-1-yl)-3-(4-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(4-fluoropiperidin-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

N—((S)-1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(3-methoxypyrrolidin-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(4-methoxy-4-methylpiperidin-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(4-methoxypiperidin-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

N-((S)-1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(3-methoxypiperidin-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

N-((S)-1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(3-methoxy-3-methylpyrrolidin-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(1H-pyrazol-3-yl)ethyl)-8-(4,4-difluoropiperidin-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)propyl)-8-(4,4-difluoropiperidin-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)-8-(4,4-difluoropiperidin-1-yl)-N-(2-methyl-1-(4H-1,2,4-triazol-3-yl)propyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

3-((8-(4-methylpiperidin-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamido)methyl)pyridine 1-oxide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)propyl)-8-(4-methoxy piperidin-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(4-carbamoyl-4-methylpiperidin-1-yl)-N-((6-methylpyridin-3-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(1H-1,2,4-triazol-5-yl)ethyl)-8-(4-methylpiperidin-1-yl)-3-(m-tolyl)imidazo[1,2-a]pyridine-6-carboxamide,

2-methyl-5-((8-(4-methylpiperidin-1-yl)-3-(o-tolyl)imidazo[1,2-a]pyridine-6-carboxamido)methyl)pyridine 1-oxide,

8-(5-isopropyl-1H-tetrazol-1-yl)-N-((6-methylpyridin-3-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-isopropyl-1H-tetrazol-1-yl)-3-(5-methylthiophen-2-yl)-N-((6-(trifluoromethyl)pyridin-3-yl)methyl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-ethyl-1H-tetrazol-1-yl)-N-((6-methylpyridin-3-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

N-((6-cyclopropylpyridin-3-yl)methyl)-8-(5-ethyl-1H-tetrazol-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-cyclobutyl-1H-tetrazol-1-yl)-N-((6-methylpyridin-3-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-(cyclopropylmethyl)-1H-tetrazol-1-yl)-N-((6-methylpyridin-3-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-methyl-1H-tetrazol-1-yl)-N-((6-methylpyridin-3-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

N-((6-methylpyridin-3-yl)methyl)-3-(5-methylthiophen-2-yl)-8-(5-propyl-1H-tetrazol-1-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-isopropyl-1H-tetrazol-1-yl)-3-(5-methylthiophen-2-yl)-N-(1-(pyrazin-2-yl)ethyl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-cyclobutyl-1H-tetrazol-1-yl)-3-(5-methylthiophen-2-yl)-N-(1-(pyrazin-2-yl)ethyl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-cyclobutyl-1H-tetrazol-1-yl)-N-((1-methyl-2-oxo-1,2-dihydropyridin-4-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-ethyl-1H-tetrazol-1-yl)-3-(5-methylthiophen-2-yl)-N-(1-(pyrazin-2-yl)ethyl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-cyclobutyl-1H-tetrazol-1-yl)-N-((6-methoxypyridin-3-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-cyclobutyl-1H-tetrazol-1-yl)-N-((5-methylpyrazin-2-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(5-cyclobutyl-1H-tetrazol-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(5-(cyclopropylmethyl)-1H-tetrazol-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(5-cyclopropyl-1H-tetrazol-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(5-(difluoromethyl)-1H-tetrazol-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-(difluoromethyl)-1H-tetrazol-1-yl)-N-((2-methoxypyrimidin-5-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-3-(5-chlorothiophen-2-yl)-8-(5-(difluoromethyl)-1H-tetrazol-1-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)propyl)-8-(5-(difluoromethyl)-1H-tetrazol-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-(difluoromethyl)-1H-tetrazol-1-yl)-N-((2-methylpyrimidin-5-yl)methyl)-3-(5-methylthiazol-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-(difluoromethyl)-1H-tetrazol-1-yl)-N-((6-methylpyridin-3-yl)methyl)-3-(5-methylthiazol-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)propyl)-3-(5-chlorothiophen-2-yl)-8-(5-(difluoromethyl)-1H-tetrazol-1-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-3-(5-chlorothiophen-2-yl)-8-(5-cyclopropyl-1H-tetrazol-1-yl)imidazo[1,2-a]pyridine-6-carboxamide,

3-(5-chlorothiophen-2-yl)-8-(5-(difluoromethyl)-1H-tetrazol-1-yl)-N-((2-methylpyrimidin-5-yl)methyl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-(difluoromethyl)-1H-tetrazol-1-yl)-N-((2-methylpyrimidin-5-yl)methyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(5-ethyl-1H-tetrazol-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-3-(5-methylthiophen-2-yl)-8-(5-propyl-1H-tetrazol-1-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(R)-8-(5-(difluoromethyl)-1H-tetrazol-1-yl)-N-(1-(5-methyl-1,3,4-oxadiazol-2-yl)ethyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-3-(5-methylthiophen-2-yl)-8-(5-(2,2,2-trifluoroethyl)-1H-tetrazol-1-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(5-(1,1-difluoroethyl)-1H-tetrazol-1-yl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-(difluoromethyl)-1H-tetrazol-1-yl)-3-(5-methylfuran-2-yl)-N-((2-methylpyrimidin-5-yl)methyl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-3-(5-chlorothiophen-2-yl)-8-(5-(1,1-difluoroethyl)-1H-tetrazol-1-yl)imidazo[1,2-a]pyridine-6-carboxamide,

8-(5-(difluoromethyl)-1H-tetrazol-1-yl)-N-((5-methylpyrazin-2-yl)methyl)-3-(5-methylthiazol-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(R)-8-(5-(1,1-difluoroethyl)-1H-tetrazol-1-yl)-N-(1-(3-methyl-1,2,4-oxadiazol-5-yl)ethyl)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(N-methylpropi onamido)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide,

(S)—N-(1-(4H-1,2,4-triazol-3-yl)ethyl)-8-(N-cyclopropylpropionamido)-3-(5-methylthiophen-2-yl)imidazo[1,2-a]pyridine-6-carboxamide.

12 . A pharmaceutical composition comprising an effective amount of a compound according to claim 1 and optionally a pharmaceutically acceptable carrier.

13 . A kit comprising a compound according to claim 1 .

14 . A method for regulating one or both of P2X 3 or P2X 2/3 receptors, said method comprising administering an effective amount of a compound according to claim 1 to a patient in need thereof.

15 . A method according to claim 14 , wherein said regulating comprises inhibition.

16 . A method for treating pain in a patient, said method comprising administering an effective amount of a compound according to claim 1 to said patient.

17 . A method for modulating one or both of P2X 3 or P2X 2/3 pathways comprising administering an effective amount of a compound according to claim 1 to a patient in need thereof.